From 0d8657dd3056063fb115946b10157477b5c70451 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 20 Nov 2023 09:09:45 +0000
Subject: [PATCH] enable lvds 1280x800

---
 kernel/sound/core/control_compat.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/kernel/sound/core/control_compat.c b/kernel/sound/core/control_compat.c
index 3fc2166..00d826b 100644
--- a/kernel/sound/core/control_compat.c
+++ b/kernel/sound/core/control_compat.c
@@ -319,7 +319,9 @@
 	err = snd_power_wait(card, SNDRV_CTL_POWER_D0);
 	if (err < 0)
 		goto error;
+	down_read(&card->controls_rwsem);
 	err = snd_ctl_elem_read(card, data);
+	up_read(&card->controls_rwsem);
 	if (err < 0)
 		goto error;
 	err = copy_ctl_value_to_user(userdata, valuep, data, type, count);
@@ -347,7 +349,9 @@
 	err = snd_power_wait(card, SNDRV_CTL_POWER_D0);
 	if (err < 0)
 		goto error;
+	down_write(&card->controls_rwsem);
 	err = snd_ctl_elem_write(card, file, data);
+	up_write(&card->controls_rwsem);
 	if (err < 0)
 		goto error;
 	err = copy_ctl_value_to_user(userdata, valuep, data, type, count);

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